Photo sensor E17 INFRARED SENSOR PHOTOELECTRIC

Q: What is the difference between a contactor and a relay?

A contactor is built for switching power circuits repeatedly at high current, often with motor duty ratings (AC-3) and arc-suppressing chambers. A relay switches control signals at low current. In practice: contactor for the motor, relay in the control circuit that drives the contactor coil.

Q: How do I calculate the correct contactor size for a motor?

Use the motor's full-load current, apply the AC-3 rating for the operating voltage, and allow for the number of starts per hour. As a rule of thumb, the contactor's AC-3 rating should be at least equal to the motor FLC, then step up one frame if the duty is heavy.

Q: Do you supply the coil voltage I need?

Coil voltages are specified per order. Send the model number, coil voltage and frequency you require and we will confirm availability and lead time.

Q: Are auxiliary contacts included?

Base models come with the standard auxiliary contact configuration for that frame. Add-on auxiliary blocks and mechanical interlocks can be quoted with the contactor.

About the Photo sensor E17 INFRARED SENSOR PHOTOELECTRIC

The Photo sensor E17 INFRARED SENSOR PHOTOELECTRIC is part of the ELEHPD Photo Sensor range. INFRARED SENSOR PHOTOELECTRIC SENSOR SWITCH E17 ELEHPD manufactures and exports low voltage electrical products from Yueqing, Zhejiang, China, supplying distributors, panel builders, M&E contractors and OEM buyers worldwide.

Full catalogue description: Photo sensor E17 INFRARED SENSOR PHOTOELECTRIC SENSOR SWITCH E17

Typical applications

Motor control centres and pump or fan starters
Machine building, conveyors, packaging and CNC equipment
HVAC control panels and building automation
Water treatment, irrigation and pumping stations
Panel retrofits replacing electromechanical control gear

How to specify the right Photo Sensor

Size the contact rating for the inductive load, not just the resistive current (AC-3 duty for motors)
Check the coil voltage and frequency available in the panel: 24 V DC, 110 V, 230 V or 400 V AC
Confirm the auxiliary contact count needed for the control and indication circuit
Match the enclosure rating to the environment (IP20 inside a panel, IP65 on the machine)

Specifications

INFRARED SENSOR PHOTOELECTRIC SENSOR SWITCH E17

外形尺寸 OVERALL DIMENSIONS
漫反射型 D i f f u s e T y p e		检测距离 Detection distance	30cm
直流 10- 30 VDC	负逻辑 NPN	常开NO	E17-3A30NA
常闭NC	E17-3A30NB
一开一闭NO+NC	E17-3A30NC
正逻辑 PNP	常开NO	E17-3A30PA
交流 90～ 250 VAC	常闭NC	E17-3A30PB
一开一闭NO+NC	E17-3A30PC
SCR 可挂硅 ControHable silicon	常开NO
常闭NC
继电器输出Relay output
漫反射型 R e t r o r e f l i c t i v e		检测距离 Detection distance	2m
直流 10- 30 VDC	负逻辑 NPN	常开NO	E17-3B2NA
常闭NC	E17-3B2NB
一开一闭NO+NC	E17-3B2NC
正逻辑 PNP	常开NO	E17-3B2PA
交流 90～ 250 VAC	常闭NC	E17-3B2PB
一开一闭NO+NC	E17-3B2PC
SCR 可挂硅 ControHable silicon	常开NO
常闭NC
继电器输出Relay output
对射型 T r o u g h b e a m		检测距离 Detection distance	3m
直流 10- 30 VDC	负逻辑 NPN	常开NO	E17-3C3NA
常闭NC	E17-3C3NB
一开一闭NO+NC	E17-3C3NC
正逻辑 PNP	常开NO	E17-3C3PA
交流 90～ 250 VAC	常闭NC	E17-3C3PB
一开一闭NO+NC	E17-3C3PC
SCR 可挂硅 ControHable silicon	常开NO
常闭NC
继电器输出Relay output
输出电流DC/SCR／继电器Control output	DC:200mA、AC：300mA
消耗电流DC/AC Consumption current	DC<15mA、AC<10mA
晌应时间DC/AC Response time	Dc<2ms、AC<2mA
指向角Directional angle	3。-10。
检测物体Detected object	透明或不透明体transparent or opaque body
工作环境温度WoJrking envlrOnment temDerature	25℃～+55℃
工作环境照度Intensity ofillumination ofworking environment	太阳光10000LX以下Sunlight underlOOOOLX白炽灯3000LX以下incandescentlamp under 3000LX
外壳材料Shell materia	塑料Plastic
防护等级Protection grade	IP54

Frequently asked questions about the Photo sensor E17 INFRARED SENSOR PHOTOELECTRIC

What is the difference between a contactor and a relay?